Submission #1001004
Source Code Expand
#include <cstdio> #include <algorithm> #include <vector> #include <stack> #include <queue> #include <set> #include <map> #include <cstring> #include <string> #include <cmath> #include <cstdlib> #include <iostream> using namespace std; #define MOD 1000000007 #define ADD(X,Y) ((X) = ((X) + (Y)) % MOD) typedef long long i64; typedef vector<int> ivec; typedef vector<string> svec; int N, A, B, C; int Comb[10050][5050]; int main() { for (int i = 0; i <= 5000; ++i) Comb[0][i] = 0; Comb[0][0] = 1; for (int i = 1; i <= 10010; ++i) { Comb[i][0] = 1; for (int j = 1; j <= 5010; ++j) Comb[i][j] = (Comb[i - 1][j - 1] + Comb[i - 1][j]) % MOD; } scanf("%d%d%d%d", &N, &A, &B, &C); if (B % 2 == 1) { puts("0"); return 0; } i64 ret = 0; for (int p = 0; p <= C; ++p) { if (B == 0 && p > 0) continue; for (int q = 0; 3 * q <= C - p; q++) { int r = C - p - 3 * q; int iso = A - r; if (iso < 0) continue; i64 tmp = (i64)Comb[B / 2 + q + r + iso][iso] * Comb[B / 2 + q + r][B / 2] % MOD * Comb[q + r][q] % MOD; if (B > 0) { tmp = tmp * Comb[B / 2 - 1 + p][p]; } ADD(ret, tmp); } } printf("%lld\n", ret); return 0; }
Submission Info
Submission Time | |
---|---|
Task | J - 123 Pairs |
User | semiexp |
Language | C++14 (GCC 5.4.1) |
Score | 1500 |
Code Size | 1208 Byte |
Status | AC |
Exec Time | 305 ms |
Memory | 197760 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:31:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &N, &A, &B, &C); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1500 / 1500 | ||||
Status |
|
|
Set Name | Test Cases |
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Sample | example0.txt, example1.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, 029.txt, 030.txt, 031.txt, 032.txt, 033.txt, 034.txt, 035.txt, 036.txt, 037.txt, 038.txt, 039.txt, 040.txt, 041.txt, 042.txt, 043.txt, 044.txt, 045.txt, 046.txt, 047.txt, 048.txt, 049.txt, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 293 ms | 197760 KB |
001.txt | AC | 282 ms | 197760 KB |
002.txt | AC | 279 ms | 197760 KB |
003.txt | AC | 279 ms | 197760 KB |
004.txt | AC | 283 ms | 197760 KB |
005.txt | AC | 280 ms | 197760 KB |
006.txt | AC | 279 ms | 197760 KB |
007.txt | AC | 279 ms | 197760 KB |
008.txt | AC | 279 ms | 197760 KB |
009.txt | AC | 280 ms | 197760 KB |
010.txt | AC | 278 ms | 197760 KB |
011.txt | AC | 278 ms | 197760 KB |
012.txt | AC | 278 ms | 197760 KB |
013.txt | AC | 278 ms | 197760 KB |
014.txt | AC | 279 ms | 197760 KB |
015.txt | AC | 301 ms | 197760 KB |
016.txt | AC | 281 ms | 197760 KB |
017.txt | AC | 286 ms | 197760 KB |
018.txt | AC | 280 ms | 197760 KB |
019.txt | AC | 286 ms | 197760 KB |
020.txt | AC | 281 ms | 197760 KB |
021.txt | AC | 298 ms | 197760 KB |
022.txt | AC | 281 ms | 197760 KB |
023.txt | AC | 283 ms | 197760 KB |
024.txt | AC | 299 ms | 197760 KB |
025.txt | AC | 283 ms | 197760 KB |
026.txt | AC | 291 ms | 197760 KB |
027.txt | AC | 297 ms | 197760 KB |
028.txt | AC | 285 ms | 197760 KB |
029.txt | AC | 288 ms | 197760 KB |
030.txt | AC | 294 ms | 197760 KB |
031.txt | AC | 298 ms | 197760 KB |
032.txt | AC | 280 ms | 197760 KB |
033.txt | AC | 279 ms | 197760 KB |
034.txt | AC | 286 ms | 197760 KB |
035.txt | AC | 288 ms | 197760 KB |
036.txt | AC | 282 ms | 197760 KB |
037.txt | AC | 280 ms | 197760 KB |
038.txt | AC | 305 ms | 197760 KB |
039.txt | AC | 279 ms | 197760 KB |
040.txt | AC | 278 ms | 197760 KB |
041.txt | AC | 285 ms | 197760 KB |
042.txt | AC | 279 ms | 197760 KB |
043.txt | AC | 279 ms | 197760 KB |
044.txt | AC | 279 ms | 197760 KB |
045.txt | AC | 280 ms | 197760 KB |
046.txt | AC | 279 ms | 197760 KB |
047.txt | AC | 279 ms | 197760 KB |
048.txt | AC | 278 ms | 197760 KB |
049.txt | AC | 279 ms | 197760 KB |
example0.txt | AC | 279 ms | 197760 KB |
example1.txt | AC | 278 ms | 197760 KB |